The necromancy

"I hope you will have a pleasant stay here," that servant greeted and walked out of the mansion as his work was over.

Chu Hua volunteered first for preparing the meals and left Yu Yan with Foix. How badly Yu Yan wished to drag herself behind Chu Hua but she ran away in a speed of light disappearing into many doors of that mansion. 

Foix brushed his hand through his long green hair and reacted confusingly staring at the interior of the mansion. When suddenly Yu Yan asked him to follow her . 

They will first have to see if the mansion has magical detectors or some kind of suspicious barriers fixed in because that city in the royal palace was an area under control of mages who work for Prince Yuxan Wei. And everyone working there including the emperor was under the control of mages. 

So before Yu Yan began her plan discussion with Foix, she wanted to make sure there isn't anything which can transport their talks to mages.